Atomic units/Related Articles

See also changes related to Atomic units, or pages that link to Atomic units or to this page or whose text contains "Atomic units".

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Parent topics

• Physics [r]: The study of forces and energies in space and time. ^[e]

Subtopics

• Elementary charge [r]: Charge of electron (negative) and proton (positive); before discovery of the quark thought to be the smallest possible electric charge, written $e$, value 1.602 176 53(14) × 10⁻¹⁹ C ^[e]
• Bohr radius [r]: Radius of the first Bohr orbit in the hydrogen atom. ^[e] (bohr) a0 length 0.529 177 2108(18) × 10−10 m
• Electron mass [r]: Add brief definition or description me mass 9.109 3826(16) × 10−31 kg
• Reduced period of first Bohr orbit [r]: Add brief definition or description ℏ/Eh time 2.418 884 326 505(16) × 10−17 s
• Reduced Planck constant [r]: Add brief definition or description ℏ action 1.054 571 68(18) × 10−34 Js
• Hartree energy [r]: Add brief definition or description (hartree)

Other related topics

• International System of Units [r]: Metric unit system based on the metre, kilogram, second, ampere, kelvin, mole and candela. ^[e]
• Atomic mass [r]: The mass of an atom expressed in unified atomic mass units (u) and formerly known as atomic weight. ^[e]
• Atomic mass constant [r]: One twelfth of the mass of a carbon-12 atom in its nuclear and electronic ground state. It is equal to the unified atomic mass unit. ^[e]
• Unified atomic mass unit [r]: A unit of atomic and molecular mass, the ratio of atomic mass to one twelfth of the mass of carbon ¹²C at rest in its nuclear and electronic ground state, approximately 1.660 538 921(73) × 10⁻²⁷ kg . ^[e]